Da sua conversa, você precisa atualizar o cache de índice do seu repositório com as seguintes linhas e instalar o que é necessário:
sudo apt update
sudo apt install -f
Com esse apt deve conseguir as dependências necessárias.
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
mysql-server : Depends: mysql-server-5.7 but it is not going to be installed
virtualbox-5.1:i386 : Depends: libc6:i386 (>= 2.15) but it is not going to be installed
Depends: libcurl3:i386 (>= 7.16.2) but it is not going to be installed
Depends: libdevmapper1.02.1:i386 (>= 2:1.02.97) but it is not going to be installed
Depends: libgcc1:i386 (>= 1:4.2) but it is not going to be installed
Depends: libgl1-mesa-glx:i386 but it is not going to be installed or
libgl1:i386
Depends: libpng12-0:i386 (>= 1.2.13-4) but it is not going to be installed
Depends: libqt5core5a:i386 (>= 5.5.0) but it is not going to be installed
Depends: libqt5gui5:i386 (>= 5.3.0) but it is not going to be installed or
libqt5gui5-gles:i386 (>= 5.3.0) but it is not going to be installed
Depends: libqt5opengl5:i386 (>= 5.0.2) but it is not going to be installed or
libqt5opengl5-gles:i386 (>= 5.0.2) but it is not going to be installed
Depends: libqt5printsupport5:i386 (>= 5.0.2) but it is not going to be installed
Depends: libqt5widgets5:i386 (>= 5.2.0) but it is not going to be installed
Depends: libqt5x11extras5:i386 (>= 5.1.0) but it is not going to be installed
Depends: libsdl1.2debian:i386 (>= 1.2.11) but it is not going to be installed
Depends: libssl1.0.0:i386 (>= 1.0.0) but it is not going to be installed
Depends: libstdc++6:i386 (>= 5.2) but it is not going to be installed
Depends: libvpx3:i386 (>= 1.5.0) but it is not going to be installed
Depends: libx11-6:i386 but it is not going to be installed
Depends: libxcb1:i386 but it is not going to be installed
Depends: libxcursor1:i386 (> 1.1.2) but it is not going to be installed
Depends: libxext6:i386 but it is not going to be installed
Depends: libxinerama1:i386 but it is not going to be installed
Depends: libxml2:i386 (>= 2.7.4) but it is not going to be installed
Depends: libxmu6:i386 but it is not going to be installed
Depends: libxt6:i386 but it is not going to be installed
Depends: zlib1g:i386 (>= 1:1.1.4) but it is not going to be installed
Recommends: libasound2:i386
Recommends: libpulse0:i386 but it is not going to be installed
Recommends: libsdl-ttf2.0-0:i386 but it is not going to be installed
Recommends: linux-headers-generic:i386 but it is not going to be installed or
linux-headers-generic-pae:i386 but it is not installable or
linux-headers-686-pae:i386 but it is not installable or
linux-headers-amd64:i386 but it is not installable or
linux-headers-2.6-686:i386 but it is not installable or
linux-headers-2.6-amd64:i386 but it is not installable or
linux-headers:i386
Recommends: linux-image:i386
Recommends: gcc:i386 but it is not going to be installed
Recommends: binutils:i386 but it is not going to be installed
Recommends: pdf-viewer:i386
Recommends: libgl1:i386
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
Da sua conversa, você precisa atualizar o cache de índice do seu repositório com as seguintes linhas e instalar o que é necessário:
sudo apt update
sudo apt install -f
Com esse apt deve conseguir as dependências necessárias.